JPS62196339A - Continuous annealing apparatus having superior strip passing performance - Google Patents
Continuous annealing apparatus having superior strip passing performanceInfo
- Publication number
- JPS62196339A JPS62196339A JP3810586A JP3810586A JPS62196339A JP S62196339 A JPS62196339 A JP S62196339A JP 3810586 A JP3810586 A JP 3810586A JP 3810586 A JP3810586 A JP 3810586A JP S62196339 A JPS62196339 A JP S62196339A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- continuous annealing
- thermal strain
- meandering
- annealing apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000137 annealing Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000002791 soaking Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は通板性に優れた連続焼鈍装置に係わり、帯状物
例えば金属ストリップに蛇行やバックリングを生じるこ
となく安定して通板できる連続焼鈍装置に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a continuous annealing device that has excellent sheet passing properties, and is a continuous annealing device that can stably pass through a belt-shaped object, such as a metal strip, without meandering or buckling. Regarding an annealing device.
（従来の技術）
連続焼鈍炉は一般に加熱帯、均熱帯、冷却帯あるいは過
時効帯から構成され、これらの中を、ストリップが搬送
ロールに巻掛けられて通板し連続的に焼鈍される。(Prior Art) A continuous annealing furnace generally comprises a heating zone, a soaking zone, a cooling zone, or an overaging zone, through which the strip is passed around a conveyor roll and continuously annealed.
連続焼鈍においてストリップの通板では蛇行やバックリ
ングと称される座屈の発生を防ぐことが良好な品質や形
状を確保するため、あるいは生産性を高めるために重要
である。In continuous annealing, it is important to prevent the occurrence of meandering and buckling during strip threading in order to ensure good quality and shape or to increase productivity.
従来において、連続焼鈍における蛇行とバンクリングの
防止技術としては、クラウンが可変な搬送ロールを設け
、連続焼鈍炉の操業中にクラウンを変えるものが、例え
ば特開昭５５−１００９１９号公報、特開昭５７−１３
７４３１号公報に提案されている。Conventionally, as a technique for preventing meandering and bank ring in continuous annealing, a conveyor roll with a variable crown is provided and the crown is changed during operation of a continuous annealing furnace, for example, as disclosed in JP-A No. 55-100919 and JP-A-55-100919. Showa 57-13
This is proposed in Publication No. 7431.
（発明が解決しようとする問題点）
ところで、連続焼鈍されるストリップは板厚が薄いもの
、板幅が狭幅から広幅であるもの、軟質であるもの、ま
たは硬質であるも、の等、多様である。こうした中で特
に薄く幅の広いストリップでは蛇行の修正に必要なセン
タリング力を得るためのクラウン量と、バックリング防
止のために超えてはならないクララン量を満足する範囲
が狭く、安定した通板を行うことが極めて難しい。例え
ば操業における必要上通板速度が急変したり、通板する
ストリップの寸法が変化した場合には、バックリングと
蛇行の両方を完全に防止できるまでに至っていない。(Problems to be Solved by the Invention) By the way, strips that are continuously annealed can be thin, narrow to wide, soft, or hard. It is. Among these, especially for thin and wide strips, the range that satisfies the crown amount to obtain the centering force necessary to correct meandering and the cranium amount that must not be exceeded to prevent buckling is narrow, making stable threading difficult. extremely difficult to do. For example, if the threading speed changes suddenly or the dimensions of the strip to be threaded change due to operational necessity, it has not been possible to completely prevent both buckling and meandering.
本発明は薄手で幅が広く軟質なストリップであってもハ
ックリングと蛇行を発生することなく安定して通板する
ことのできる通板性に優れた連続焼鈍装置を提供するこ
とを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a continuous annealing device that can stably pass even a thin, wide, and soft strip without causing hackling or meandering, and has excellent strip threading properties. .
（問題点を解決するための手段）
以下に、本発明を一実施例に基き、図面を参照して詳細
に説明する。(Means for Solving the Problems) The present invention will be described below in detail based on one embodiment with reference to the drawings.
本発明者達は通板性を高めるために、種々実験し検討し
た。その結果、力学的解析により第３図に示すようにセ
ンタリング力が搬送ロール１のクラウン量θとロールの
クラウン部分に接するストリップ２の幅Ｂに依存するこ
とを確めた。すなわちストリップの形状を制御すること
により、搬送ロールクラウン部に接するストリップの幅
を適正な値に保つと、バンクリングも蛇行も発生させず
通板することが可能であることを見出した。The present inventors conducted various experiments and studies in order to improve the threadability. As a result, it was confirmed through mechanical analysis that the centering force depends on the crown amount θ of the conveying roll 1 and the width B of the strip 2 in contact with the crown portion of the roll, as shown in FIG. That is, it has been found that by controlling the shape of the strip and keeping the width of the strip in contact with the crown portion of the transport roll at an appropriate value, it is possible to thread the strip without causing bank ring or meandering.
これを具現化する装置構成としては、連続焼鈍炉または
連続メッキ炉に設ける搬送ロールの入側または出側にあ
るいは入側、出側の両方にストリップに熱歪を与える装
置を設ける。As an apparatus configuration for realizing this, a device for thermally straining the strip is provided on the input side or the output side, or on both the input side and the output side, of a conveyor roll provided in a continuous annealing furnace or a continuous plating furnace.
第１図は竪型連続焼鈍炉における搬送ロール１とストリ
ップ２を略示するもので、炉上部の搬送ロールに熱歪付
与装置３を設けた本発明の一実施例を示している。スト
リップ２は搬送ロール１に捲き掛けられて、矢印方向に
通板される。FIG. 1 schematically shows a conveyor roll 1 and a strip 2 in a vertical continuous annealing furnace, and shows an embodiment of the present invention in which a thermal strain imparting device 3 is provided on the conveyor roll in the upper part of the furnace. The strip 2 is wound around the conveyor roll 1 and passed in the direction of the arrow.
本発明においてはストリップ２が搬送ロール１に捲き付
く場合にその直前または直前、直後に設置した熱歪付与
装置３でストリップ２に加熱または冷却作用を与えて熱
歪を生じさせ、搬送ロール１のクラウン部に接するスト
リップの幅を適正にする。In the present invention, when the strip 2 is wrapped around the conveyor roll 1, the thermal strain imparting device 3 installed immediately before, immediately before, or after the strip 2 is heated or cooled to generate thermal strain on the conveyor roll 1. Adjust the width of the strip that touches the crown part.
熱歪付与装置３について第２図を参照して述べる。熱歪
付与装置３はストリップ２の幅方向に分割して設けられ
るが、第２図（Ａ）に示すように熱歪付与装置３として
例えば加熱装置３−１が用いられたり、また第２図（Ｂ
）のように、加熱装置３−１と冷却装置３−２の組合せ
が用いられ、あるいは図示しないが冷却装置のみが用い
られる。The thermal strain imparting device 3 will be described with reference to FIG. The thermal strain imparting device 3 is provided separately in the width direction of the strip 2, but as shown in FIG. 2(A), for example, a heating device 3-1 is used as the thermal strain imparting device 3, or (B
), a combination of a heating device 3-1 and a cooling device 3-2 is used, or only a cooling device (not shown) is used.
これらの加熱装置３−１、冷却装置３−２はそれぞれ独
立して加熱作用、あるいは冷却作用をストリップに与え
るものであり、ストリップ２に熱歪を付与し、その形状
を通仮に好適なものとする。The heating device 3-1 and the cooling device 3-2 each independently provide a heating effect or a cooling effect to the strip, and apply thermal strain to the strip 2 to temporarily change its shape to a suitable one. do.
例えばストリップを通板している際に、前段の搬送ロー
ル間で蛇行が生じている場合にはストリップ２の幅中央
部およびその近傍に加熱装置３−１で加熱作用を与えて
中伸び形状４にして搬送ロールのクラウン部に接するス
トリップ２の幅を広げセンタリング力を増加させる。逆
にバックリングが発生しそうな場合は、その防止のため
にストリップ２０両端部を加熱するか、あるいはストリ
ップ２の中央部を冷却してストリップ形状を端伸び形状
５にして、搬送ロールｌのクラウン部に接するストリッ
プ２の幅を狭め、センタリング力を低減させればよい。For example, if a meandering occurs between the conveyance rolls in the previous stage when the strip is being passed through, the heating device 3-1 applies a heating effect to the center of the width of the strip 2 and its vicinity. The width of the strip 2 in contact with the crown portion of the transport roll is increased to increase the centering force. On the other hand, if buckling is likely to occur, in order to prevent buckling, either heat both ends of the strip 20 or cool the center of the strip 2 to make the strip shape 5 with elongated edges, and then remove the crown of the conveyor roll l. The centering force may be reduced by narrowing the width of the strip 2 in contact with the area.
（実施例） 次に実施例を述べる。(Example) Next, an example will be described.
本発明による熱歪付与装置３を竪型連続焼鈍炉の加熱帯
後段から均熱帯にかけて設置し、搬送ロール１は径８０
０鰭、クラウンの大きさｔａｎθ＝０．００１で、スト
リップ２として厚み０．３ ｍｍ、幅１２００１＊の低
炭素鋼板を再結晶温度以上で通板速度４００ｍ／分で焼
鈍した。ストリップ２の幅方向の温度分布を、両端側高
温とすることによりバンクリングも蛇行も発生なく通板
できた。The thermal strain imparting device 3 according to the present invention is installed from the latter stage of the heating zone to the soaking zone of a vertical continuous annealing furnace, and the conveyor roll 1 has a diameter of 80 mm.
A low carbon steel plate with a thickness of 0.3 mm and a width of 12001* was annealed as the strip 2 at a passing speed of 400 m/min above the recrystallization temperature with a 0 fin and a crown size tan θ = 0.001. By setting the temperature distribution in the width direction of the strip 2 to a high temperature on both ends, the strip could be threaded without bank ring or meandering.
（発明の効果）
以上のように本発明に従って搬送ロールに接するストリ
ップに熱歪を与えることにより、バックリング、蛇行の
発生がない安定通板が可能になる。(Effects of the Invention) As described above, by applying thermal strain to the strip in contact with the conveying roll according to the present invention, stable sheet threading without buckling or meandering becomes possible.
特に薄手、広幅、軟質鋼板の連続焼鈍に適用すると効果
が大である。It is particularly effective when applied to continuous annealing of thin, wide, and soft steel plates.
第１図は本発明の連続焼鈍装置の一実施例を示す説明図
、第２図はストリップに熱歪を付与する装置の実施の態
様を示す図、第３図は本発明の技術思想を説明するため
の図、第４図はストリップに生じた中伸び、端伸びの一
例を示す図である。
特許出願人 新日本製鐵株弐會社
第１図
Ａ
第４図Fig. 1 is an explanatory diagram showing an embodiment of the continuous annealing apparatus of the present invention, Fig. 2 is an explanatory diagram showing an embodiment of the apparatus for imparting thermal strain to a strip, and Fig. 3 is an explanatory diagram showing the technical idea of the present invention. FIG. 4 is a diagram showing an example of the middle elongation and edge elongation that occur in the strip. Patent Applicant: Nippon Steel Corporation, Nippon Steel Corporation Figure 1A Figure 4
Claims (1)
置において、搬送ロールの入側または出側、あるいは入
側と出側の両方に、帯状物に熱歪を与える装置を設けた
ことを特徴とする通板性に優れた連続焼鈍装置。In a device that continuously anneales a strip by passing it over a conveyor roll, a device that applies thermal strain to the strip is installed on the inlet or outlet side of the conveyor roll, or on both the inlet and outlet sides. Continuous annealing equipment with excellent sheet threadability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61038105A JPH072975B2 (en) | 1986-02-22 | 1986-02-22 | Continuous annealing equipment with excellent stripability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61038105A JPH072975B2 (en) | 1986-02-22 | 1986-02-22 | Continuous annealing equipment with excellent stripability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62196339A true JPS62196339A (en) | 1987-08-29 |
| JPH072975B2 JPH072975B2 (en) | 1995-01-18 |
Family
ID=12516190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61038105A Expired - Lifetime JPH072975B2 (en) | 1986-02-22 | 1986-02-22 | Continuous annealing equipment with excellent stripability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH072975B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03180430A (en) * | 1989-09-22 | 1991-08-06 | Kobe Steel Ltd | Method and device for preventing heat buckle of steel sheet in continuous annealing furnace |
| JPH04259334A (en) * | 1991-02-08 | 1992-09-14 | Sumitomo Metal Ind Ltd | Method for preventing meandering of steel strip in continuous annealing furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5980734A (en) * | 1982-10-28 | 1984-05-10 | Kawasaki Steel Corp | Continuous annealing device |
| JPS59157226A (en) * | 1983-02-24 | 1984-09-06 | Kawasaki Steel Corp | Method for preventing buckling of steel strip in continuous annealing furnace |
-
1986
- 1986-02-22 JP JP61038105A patent/JPH072975B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5980734A (en) * | 1982-10-28 | 1984-05-10 | Kawasaki Steel Corp | Continuous annealing device |
| JPS59157226A (en) * | 1983-02-24 | 1984-09-06 | Kawasaki Steel Corp | Method for preventing buckling of steel strip in continuous annealing furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03180430A (en) * | 1989-09-22 | 1991-08-06 | Kobe Steel Ltd | Method and device for preventing heat buckle of steel sheet in continuous annealing furnace |
| JPH04259334A (en) * | 1991-02-08 | 1992-09-14 | Sumitomo Metal Ind Ltd | Method for preventing meandering of steel strip in continuous annealing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH072975B2 (en) | 1995-01-18 |
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